In-Situ Rapid Measuring Technology and Application of Coal and Rock Strength
Abstract：In order to have the real uniaxial compressive strength of the coal and rock mass, the paper introduced the in-situ measuring and test method of the coal and rock compressive strength and the method was applied to the site measurements of the coal and rock strength in the mining blocks of the east and west wings in Zaoquan Mine. The results showed that the average uniaxial compressive strength in No. 2 seam of Zaoquan Mine was over 17 MPa and the compressive strength of the powder sandy stone and fine sandy stone in the roof was 42 ~ 55 MPa. The compressive strength of the sandy mudstone and the mudstone was 24 - 34 MPa. The compressive strength of the carbonaceous mudstone was lower and was 11 - 15 MPa. Due to the site measured data of the compressive strength of the coal and rock mass in the underground mine applied to the design of the mine roadway support could meet the actual condition of the underground mine, the rationality and the reliability of the design could be obviously improved and the support status of the mine roadway could be obviously improved
Keywords：uniaxial strength of coal and rockin-situ measurementborehole contact detection methodgateway support
Publication Date：2012-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)